%0 Journal Article
%T Magnetovolume instability in compound LaFe11.5Si1.5<br>LaFe11.5Si1.5中的磁不稳定性
%A Wang Guang-Jun
%A Wang Fang
%A Shen Bao-Gen
%A <br>王光军
%A 王 芳
%A 沈保根
%J 物理学报
%D 2005
%I 
%X In order to investigate the magnetovolume instability in compound LaFe11.5< /sub>Si1.5, we employed first-principles electronic-structure calcul ations b y using a full-potential linearized-augmented-plane-wave method within the gener alized-gradient approximation. The total energies of nonmagnetic and ferromagnet ic states were calculated by spin-polarization approach and the calculated resul ts showed that there is little difference between them. The fixed-spin-moment ca lculation confirmed that the metamagnetic transition was associated with low-sp in-high-spin transition in compound LaFe1.5Si1.5. Based o n the ca lculated results, we could explain qualitatively some of the experiment results.
%K magnetovolume instability
%K metamagnetic transition<br>磁不稳定性，
%K 变磁转变
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=C345DE78606C2C2E&yid=2DD7160C83D0ACED&vid=318E4CC20AED4940&iid=B31275AF3241DB2D&sid=45B945AE36F6880C&eid=29EF3FA9A2182B88&journal_id=1000-3290&journal_name=物理学报&referenced_num=1&reference_num=19